Yard-truck.



R."` s.MAxwEL L. YARnemucK. APPLICATION FILED AUG2e `|915.

Patented Feb. 27, 1917.

INVENTOR Ralph 3. Manuel@ E R Oe T T A o i" the-truck frarnef'` Orifthegouter ends of said UNITED srA'kllEs APAcrEN'r osrron.

RALrH s MAxWELL, oF'Pon'rLAND, onE'GoN, AssIGNon or ONE-HALF 'ro JULIA M.

maxim, or roarLANn, onse/ON.

Yann-musk.

lll-l,- Speclcation of Letters Patent.

Patented Febr2'7, 1917.

To allP 'whom it may cohcerh: i

Beit known that I, RALPH S. MAXWELL, a citizenY ofthe United- States, and a resident of Portland, eountyof Multnomah,'and State of Oregon, have invented a' 'new vand useful Im rovement in YardTrucks, of,` which the r fol owing is `n specification. 4

This invention relates to loading deviees kn'own as yard trucks used in lumhetyards or other yards of similar character, where portable bodies are used. Thesebdies are loadedin'the yard' and are then transferred to delivery trucks. Prior to 4my invention,

much time and labor was involved in the transfer of portable bodies from a yardl truck to a delivery truck, and therefore, one

of the main objects of this in yention is to provide a yard truekso constructed as to facilitate the transfer' of such body. l

Another.v of the mainobjects of my invention is to so -construet the yard' .truck as to 3 ada t it for coperation with a` delivery llt, to'thereby make the work of transfer 'The truck frame comprises top mem bers a, vvei'tical struts aytransverse planestluts 412,. and o, and skids' b. The top frame! members a and the-:skids b are not l parallel, `but are so arran" edthat when-the front endof the frame is elevated'A to the varo er position, the top ,members ai'willbe Y to frame members, and transverse deadl sllaftsresfixed crankarms g', and Wheels h are mounted onswideranl "iirms. Stop members i', are firedlonfthe sidesv of the skids, against which crank arms f are adapted truck.

to abut, when the parts are )ositio ed as Shownin Fig. 1.. 1- u A lever .arm4 j provided with a' ballhead k .brace members ,Z'form stays between the ends o f the skids and the front ,strut d'. Additional struts m extend between thef transverse struts a, a", and are spaced from'the brece members l. These members provide guide Ways Afor the vertical blOQkS 7?, the ripper faces p of which; are b'eveled'as shown 1n Fig. 1. H oles p2 are provided fin Athe blocks and holes l are provided in the brace members l. .VVh'en the truck is to be moved, the blocks p may or pin, not shown, said -holes to hold these Parts together.

r represents ,an auto" deliyefry"l truck ,of standard constructiomthe real-.end of which is provided with' a rigid 'inclined tail-gate 8, l

rolls t are` journaled in theiiioor the and 'The general operation olf-,device 4is as follows: Beforethe .yard truck is laded,

the lever is thrown forward to the-position showin in Fig..1.j This action will elevate the forward 4end of the truck, and by reason of the cre-nk arms beingpositioned slightly over center and contacting with the stpsi, thetruck will be maintainein this position.

Las'. is indicted iardtmk; beerl, t It will b'e 4 load, which in this is then placed onthge ing( directly on 'the' dead rn be lifted so' as to bring the holes p? and linto registration, and a bolt oted thatthe forward' endfof the' load p1o- I' jhts beyond'l the forward end ofV thetruek. ,q en' the 'load u.V is to be 'transferred to the delivery truck fr, thel latter'ris baeked `up along .lil-1,6 Path as yindieale'df inl Figs .15 lmlll l,the 'Inclined tailgtes .faees of' the' bloc tflie truck will then cause the rear endg of' the- -Themementum of letter to be lifted'up','und; held rigid-so that when the load is transferred to, the rolls t,

rikes the4 beveled the latter will not bedisplseed b. the

springsat the rear end ofthe truck. n this way, the loed will be maintained wholly-on' -the 'rolls t an'd'not on the door of the truck` The' l.inclined tailLgate 's will in the. mean time have contacted with4 and rocked the lever j. As soon as tlie' crank arms gi are thrown overcenter, the front of the-truck` will drop until the skids I) lie tinten-,the

ground. This action will cause the front end of the load u to drop and bear directly on the rear roll t of the trucklr. If the rolls t are of the dea-d type, the loa-d u can be manually shoved forward onto the body of the truck, but if the rolls t are live rolls, theload will automatically transfer'itself onto the truck r. i

' I claim:

1. A loading device, comprising a rigid frame, the top und bottom longitudi al members of sald frame being non-parel el, rolls mounted on the top members of said frame, and adapted to carry the load, means for elevating the forward end of the frame, said means including o crank shaft, means for limitingl the degree of throw of the bannir-shaft,l and suidelevating means-being.,r also adaptable for lowering the forward end of the frame to-initial position. y l

2. A loading device comprising a rigid frame, the top and bottom longitudinal members of said -frame being non-para1lel, load carryingrolls mounted on the top members of said frame, a cranlr-sliaft provided 25 'menibers oit' said frame being non-parallel,

load carrying rolls mounted on the top members of said frame, with-wheels andan opera-ting lever for elevating the forward end of the truck, sto i members against which the crank-sliat abuts for limiting the degree of throw of a crank-shaft provided the' crankshaft, said operating lever pro- 40 beyondthe frame when 'the forwarffl the truck frame 1s elevated. i'

RALPH S. MAXWELL.

jectin end oli: 

